HELP ME! ERROR IN CONNECTION WITH USER TRANSACTION

Thomas <[email protected]> Fri, 17 Feb 2006 09:57:42 +0100
Newsgroups gmane.comp.java.enhydra.shark
Organization OT Consulting
Message-ID <[email protected]>
Hi,
i've seen the error in the attachement while i'm trying to connect with 
admin user.

I 've deployed my app. in Jboss 4.03 AS and the data source is My Sql 5...

anybody knows the mistake that i've made?
error_in_connect.txt (text/plain, 1.2 KB)
the error...

2006-02-17 09:16:36,030 ERROR common.ExceptionUtility.<init>(ExceptionUtility.java:30) - Exception in connect
2006-02-17 09:16:36,030 ERROR common.ExceptionUtility.<init>(ExceptionUtility.java:31) - Message : Errore: rilascio della transazione fallito
2006-02-17 09:16:36,030 ERROR common.ExceptionUtility.<init>(ExceptionUtility.java:32) - Exception Message: Can't create UserTransaction
2006-02-17 09:16:36,040 ERROR common.ExceptionUtility.<init>(ExceptionUtility.java:33) - StackTrace: Can't create UserTransaction
2006-02-17 09:16:36,070 ERROR common.ExceptionUtility.<init>(ExceptionUtility.java:38) - java.lang.NullPointerException
	at org.enhydra.shark.Shark.createUserTransaction(Shark.java:219)
	at com.otconsulting.bpm.wf.services.ConnectionMgr.connect(ConnectionMgr.java:88)
	...


My Source: 

 ...
 UserTransaction ut=null;
 SharkTransaction t = null;
 try{
	ut=getLocalSrv().findWorkflowServer().getInstance().createUserTransaction();   <-- line 88
	t=getLocalSrv().findWorkflowServer().getInstance().createTransaction();
	getLog().debug("ConnectionMgr - Connect (start)");
	String user=userSession.getUsername();
	String pwd=userSession.getPwd();
 ....
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